Sentinel X400 High Performance Cleaner is specifically designed for cleaning older central heating systems. It is a non-acid treatment which restores circulation to radiators and pipework. Its ruthlessly efficient formula shifts built-up magnetite sludge, eliminating cold spots in radiators and restoring proper heat distribution.

• Restores systems suffering with circulation problems
• Eliminates radiator cold spots
• Prepares older systems for the installation of new components
• Has a non-acid formula which does not cause pin-holing or leaks
• Can be used in all types of indirect heating systems, including those containing aluminium